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Annotations-based syntax for GraphQL schema definition

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/**
 * Copyright 2016 Yurii Rashkovskii
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 */
package graphql.annotations.util;

import javax.xml.bind.DatatypeConverter;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;

public class Base64 {

    private Base64() {
    }

    public static String toBase64(String string) {
        try {
            return DatatypeConverter.printBase64Binary(string.getBytes("utf-8"));
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }
    }

    public static String fromBase64(String string) {
        return new String(DatatypeConverter.parseBase64Binary(string), Charset.forName("UTF-8"));
    }
}